Door.



2 SHEETS-SEBET 1,

A. RITTER.

110011. APPLIOAITION FILED SEPT. l1. 1905.

Witnesses fha/ PATENTBD JUNE ll, 1907.

A. RITTER.

DOOR.

APPLICATION FILED sEPT.11, 1905.

zsHEBTs-SHEET 2.

5l 1 a veA/trof,

@Mouw l,

@Witnesses lrmrrn stairs'A .afrim'r orio.

No. essere.

Specication of Letters Patent.

Patented June 1 1, 1907.

Application filed September 11,19i5. Serial Nu.`27'7,825.

.70 all whom it may concern:

Be it known that I, ADAM RITTER, a citizen of the United States,residing a Cincinnati, in the county of Hamilton and 'State of Ohio, have invented certain new and useful Improvements in Doors, of which the following is a specification.

' My invention relates doors. l

One of its objects is to provide an improved door consisting ot a series' 'of sections and means for opening the same. y

Another object is to provide an improved vertically moving door composed of a series of sections.-

Another object is to provide such a ,door

to improvements in with improved guides and lifting and counthe door open.

' lift the other sectionsu terbalancing mechanism.

lt further consists in certain details of form, combination and arrangement, allof which will be more fully set forth in the description of the accompanying drawings, in which;

Figure 1 is a plan view of my improved door with the door closed. Fig. 2 is a vertical sectionthrough the same on line au o: of Fig. 1'. Fig. 3 is a view similar to Fig. i with Fig. 4 is a central vertical section through the door Fig. 3. Fig. 5- is a section on line lv if Fig. 4.

The door sections are preferably arranged to lift vertically, and when open to occupy a osition side by side above the door frame, but may it desired he arran ed to slide to one side of the door frame.v here may be two or more door sections employed, as desired, two being shown' in the drawings.

A represents the door frame, B B represent the door sections, which may be composed oi wood, wood sheathed in iron, iron, concrete, or other desired material. The

door sections are secured together and to the frame A b y means oil a series of links a a a? and brackets ai. so that the lifting ot one section, say the lower section, wili serve to also The upper door section is guided vertic -lly by means of side rails t) and straps c secured thereto and projecting over the edges oi' the section. lhc lower section is provided with angle irons d at cach edge, which slide in growcs d formed by the plates l). At c at the lower end these grooves d are wider so as to pci'- mit the lower door section to assume a position vertically beneath the upper door sccshaped levers f which.. operate automatically vby 'rictional engagement with the face of' thc lower door section to forcev it into alinement with the upper section. MSaid levers may also be operated by hand, if desired, and when the doors are 'in the closed position may be emiloyed to lock the doors in place. When the lower door section is raised it is guided by the grooves d to a position in rear vof the upper .door section as shown in Fig. 4.

In order to permit the door sections to assume the position Fig. 4' the links a are pivo ted to the upper sections by means of studs m projecting therefrom a distance equal to thethickness of the lower section.

Attached to bracketslg at the sides of the lower door section are eye-bolts y', `from which cords, or cables h 71, pass over pulleys` 'L t and are attached to counter-weightil.A

The doors it large and heavy are opened and yclosed by means of a hand chain I passingl over a sprocket wheel n on shaft J, which carries a gear K meshing with a larger gear [I on the shaft of the pulley i'. Smaller doors may be operated by lifting or pulling down the door sections by hand. By the arrangement herein shown the countcrweight is reouired to be only about haii as heavy as the oor sections, and the sections may be moved easily and smoothly from one position to another.

lt represents s rings whose free ends encage and tend to lift links c2, and whichmay be employed or not asdesired.

. rThe mechanism herein specified is capable of considerable modification without departing from the principle of my invention.

Having described my invention, what I claim is 5 l. 1n a door, a series of door sections, links pivoted at one ond to the door frame, links similarly pivoted to the end door section,

crossed 'links pivoted near their centers to the intermediate door section with their ends pivoted to the promoting cnds of said links attached to the door traino and ond door scc-l tion, which is effected bymeanspi the cam pivotid at their ends to links pivoted respec- 9 l aangaan lively m tho door lifeline nml in ilwl and (lnnr fsf-Milon.

sections securing sniil doors log-other and m the frame, guide-s lo elim :t izlils'ecinns inw one vnricnl plane when closed mul into pan allai wrliffnl planes xl-'wn nninml, n counterlvalnnce, flexible cunnouiionsf between the nommer-Bnlance mil nn@ of tlw door sections and nwvalile suppnr im snirl lnxiblv oonnections.

4. ln n door, n, serios nl door seminns Secured together nml lo the Emme by links, guides to direct the sections inlio une vericnl plane to close tlw opening, and into parallel vential planes Side by side when the door is open, a counter-balance, flexible connctionn lending from one door sentan tn the munterlmlaime, wheels sllppmwing said flexible clonnentions, nml means for moving said lexilblnv connections over the wheels to Shift the door sections.

5. in n, floor, n sei'ies 01"' door Sections se` mn'nd mgnlhm nd 11o the frame by crnssed links pivonlly ntlncllfxl to one face of (he door sections so that the Severn-l sections move in unini'rn lint nl varying rates of travel, guides directing the seetions into position to close tile door, tand i'nlio pnrallel planas when the doni is ensued, and moans for lshining the sections from one posi'ion in inn n'llwr.

6. ln n door, n serie/snif cloni' wallons, a. SQA ries of links pivol'ml to one fue@ nf Snifl door snniinns und nninprining links (-enlinllv niv-- Utell in lll@ inlnrmcilinln dem? nemici: sind lively to the door rsnnn and lo the mul door vseolinn, unil pivu, studs im' unisi wnlmlly piwi'ml linke` projnfing imm Un@ inmunen dint@ in' ')vcrlappenl dom.' scntinn. 3. .in n door, a. norms n? door snm mns, link leclxnnisni attached tn one lacci nl :mid Llom 1 7. in n. flnnr, n sericn nl' door sec-lions, :i sa ries of links pivotei to one face of sind doni soc-tinnn and cnmprisinglinks cent-rally piv- @teil to the intermediate door section and pivotml nt' lli-cir ends 1.o links pivoted iespanlivply ln the 1001' frame' and lin ik@ @mi door Section, und springs engaging the links attached tn the door lrarzne ln cnnnterbnlance the weight of lin door scclinns.

8. ln n door, a series nl" door SecLinnS, n serios of links occupying n plan@ parallel willi the door sections and pivoallly connected to one lace of snlifl door secl'ions, connecting Said door Sections together and. lo the door imma, guides nt the edges of said door sec-,tions diiecing tlm door seclinnsinlin one veriicnl movement 'of lli@y lather door sect/inns, guides; nt the edges of said. door sectmns directing the door sentinnn intoA one. vexji'innl plane when closed sind, into pmnllelvrticnl planes tlm side nl' the npining vfnm Opened.

In testimony whereof have affixed my signature in piennuc nl uw witnesses. l

A DAM RTTER.

nlane when closed n-nil inw pmnlk-l Verniml 

